Door-closer.



W. K. HENRY.

DOOR CLOSER. APPLICATION FILED 21, 1910. i 967,769. Patented Aug. 16,1910.

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'WJK. HENRY.

vDOOR GLOSBR.

APPLICATION FILED MAR. 21, I910.

Patented Aug. 16, 1910.

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DOOR CLOSER.

Patented Aug. 16,1910.

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W. K. HENRY.

DOOR CLOSER.

APPLICATION FILED MAR. 21, 1910.

Patented "Aug. 16, 1910.

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5] me wtoz A Q [I ENE? UNITED STATES PATENT OFFICE.

WILLIAM K. HENRY, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO I. & F.CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

DOOR-CLOSER.

Specification of Letters Patent. Patented Aug, 16, 1 910.

Application filed March 21, 1910. Serial No. 550,599.

To all whom it may concern:

Be it known that I, WILLIAM K. vHENRY, a citizen of the United States,residing at New Britain, county of Hartford, State of Connecticut, haveinvented certain new and useful Improvements in Door-Closers, of whichthe following is a full, clear, and exact description.

My invention relates to improvements in door closers.

In the preferred form of my invention the closer is associated with doorchecking mechanism of any suitable construction.

The object of the invention is to improve the closer mechanism in avariety of ways as will later be explained.

In the drawings'-Figure 1 is a side eleva-- tion of a combined doorcloser and check, certain parts being shown in sect on to reveal theinterior arrangement; Fig. 2 is a similar View minus the check andshowing the parts in different position; Fig. 3 is a view similar toFig. 2 but showing the parts in still another position; Fig. 4 is a planView of the assembled mechanism; Fig. 5 is a plan view, the cap andinterior movable parts of the closer being removed; Fig. 6 is a view ofthe under side of what I will term the lower dog; Fig. 7 is a view ofthe upper side of said dog; Fig. 8 is a side elevation of the clutch;Fig. 9 is a view of the under side of the cap for the closer case; Fig.10 is a view of the top side of what I will term the upper dog; Fig. 11is a view of the under side of the upper dog; Fig. 12 is a view of theunder side of the lever arm; Fig. 13 is a vertical sectional view ofwhat I will term the combined center support and bushing.

1 is the closer case or housing preferably of cylindrical outline andprovided with a I mechanism, the same being preferably integrally formedwith the case 1 and contaming any suitable checking mechanism,preferably of the so-called liquid type.

4 is a spindle passing centrally down through the case 1 and through thepartition wall at the base of the same between said case and thecylinder 3, the lower part of the spindle being suitably connected withthe checking mechanism.

5 is a lever arm, such as customarily connected to the upper end ofthespindle 4,

and by which the closer and check is connected to a door casing, thecheck itself being usually connected to the door proper.

It should be understood that the apparatus is adapted to either a rightor left hand door, and that when properly applied to a door, the openingand closing movement of the door imparts a swingingpmovement to thelever arm 5.

6 is a clutch rigidly mounted upon the sleeve 7, the upper end of thelatter projecting through the cap 2 and is provided-with a toothed ornotched flange 8 .at a point outside of the ca 2. The clutch 6 isprovided with opposite y facing clutch teeth or shoulfders 9--10.Rot-atably mounted upon the sleeve 7 above and below the clutch 6 aredogs 11-12 respectively. 'The upper dog 11' has an abutment tooth orshoulder 13, which is arranged to be en aged by the clutch teeth 9. Thelower 0g has an abutment tooth or shoulder 14 arranged to be engaged bythe clutch tooth 10. The clutch 6 may be formed upon the sleeve 7 in anysuitable way or may be separately formed and secured thereto as by ascrew 15.

The bottom of the case is provided with a back stop 16 arrangedeocentrically while theunder side of the lower dog 12 has a stopshoulder 17 which is so arrangedas to engage the aforesaid back stop 16,which latter acts as a back stop to limit the rearward turning movementof the dog- 12. The cap' 2 is provided on its under side with a backstop 18 while the up er side of the upper dog 11 is provided w1t a stopshoulder 19 arranged to-co-act with the back stop 18, the latter servinto limit the rearward turning movement 0 the upper dog.

20-is a coil spring, one end of which is anchored in a notch 21in theupper do 11, the other end being anchoredin a note 22 in the lower do12. The action of the spring 20 is to pu l the two dogs toward the twoback stops 1618 respectively.

. 1 23. is a combined center support and bushan inner air chamber 24with a return flow duct 25. It mayalsoucontain a packing 26, held by aspiral spring 27 against the-inner end of an adjustable gland 28. Thelength of this bushing not only permits the same to be employed as acenter support for. the

various rotatable inner parts, namely, the

'clutch and dogs, but also by reason of its length absolutely preventsthe possibility of any liquid from the check chamber working up into thespring chamber.

29 is a dog or pawl pivotally mounted on the under side of the lever arm5 and arranged to engage in any one of the notches in the flange 8. Bypreference, the pawl 29 is double-ended whereby it may be easily adaptedto right or left hand adjustment.

The cap 2 is held against turning on the case 1 in any suitable way, forexample, by a pin 30, carried by the under side of the cap and "arrangedto take into a corresponding opening in the upper end of the case 1.

' It will be observed that the rear sides of the teeth or abutmentshoulders 913 and 10-14 arelcorrespondingly beveled, which is a referredconstruction, since it permits the 0g 11 to make practically a completeforward revolution. The same is also true of the dog 12. When it isdesired to adjust the spring finally to determine its force on the leverarm 5,1a spanner or suitable wrench may be applied to the flange- 8, andthe clutch turned in the desired direction,

according to the swing of the door to which the check is applied. Thisturning movement turns the clutch 6 and one of the dogs Finally the pawposite position and the pawl again moved intoits flange engagingposition.

- It will be observed that all the arts are so proportioned and arrangedthat t e greatest strength and durability is secured. The parts are alsoso designed that they may be manufactured at comparatively small cost.As shown, the spindle 4 not only takes a hearing within the bushing 23at a point intermediate the length of the former but it also ispreferably ste ped at its lower end in a bearing 31 in' the ower end ofthe check case 3 so that side strain on the spindle is resisted mosteffectively.

When assembled, it willbe seen that all of the rotatable parts find acommon support uponthe bushing 23 and are thereby guaranteed .at onceeffective and accurate alinement. Further than this, it permits theclutch .and dogs to be made of maximum proportions and to be engaged fordriving purposes near their periphery where the greatest leverage-isafforded, all of which features contributetothe strength and durabilityof the entire apparatus.

What I claim is: a

1. In a door closer, a housing, a rotatable spindle, a hollow centersupport therefor, a lever arm connected to the spindle, a doubleactingcloser spring, a rotatable clutch, means for adjustably connecting saidclutch with said arm, including a sleeve carrying the clutch, and means'standin on said sleeve and at opposite ends of the c utch for alternateen agement thereby, the ends of said spring e1ng respectively connectedwith said clutch through the medium of said means, said sleevesurrounding and being supported bysaid center sup ort.

2. In a door closer, a housing a rotatable spindle, a lever armconnected thereto a double-acting closer spring, a rotatable clutch,means for adjustabl connecting said clutch with said arm, inclu ing asleeve carrying the clutch, and means standing at 0pposite ends of theclutch and independently rotatable on said sleeve for alternateengagement by the clutch, the ends of said s ring being respective?connected with said c utchthrough the me um of said means, and a singlesupport in common-to said sleeve and said spindle and between the same.

3. n a door closer and check, a-housing a rotatable spindle, a lever armconnected thereto, a double-acting closer sprin a m tatable clutch meansfor adjustab opposite ends of said clut'ch' for alternate engagementthereby, said springs being 0 eratively connected with sa1d dogs, the ens of said spring being respectively connected to said clutch by saiddogs, a back sto device for each of said dogs to limit the ackwardturnin movement of the same, and a central tubular support for saidclutch and dogs, said spindle passing through said support and having a.bearing within the same, and a checking device connected with wardturning movement of the same, a com tral tubular support for said clutchand dogs, said spind e passing through said support and having a bearingwithin the same, said center support havin an elongated annular airspace and a pac g atone end of said air space, anda liquid door checkingdeoon-. necting sa1d clutch with said arm, ogs at a lever arm rigidlysecured thereto, a oubleacting, s ring indirectly connected at both ends.wit said spindle, said indirect connection including two rotatable dos, a clutch clutch and said lever arm, said clutch and dog mechanismhaving a central fixed bearing'support independent of said spindle.

6. In a reversi le door closer, a spindle, a

lever arm rigidly secured thereto, a doubleacting spring indirectlyconnected at both ends with said spindle, said indirect connectionincluding two rotatable dogs, a

clutch cooperating therewith, reversible and adjustable means ofconnection between said clutch and said lever arm, said clutch and dogmechanism having a central hearing support independent of said spindle.

7 In a door closer, a housing, a central tubular bearing supportextending from the lower end of said housing to a point near the upperend of said housing, a sleeve ro tatable thereon, a clutch mounted-uponsaid sleeve, two dogs rotatable. on said sleeve and arranged one aboveand one below said clutch and arranged to be alternately engaged by saidclutch, a back stop for each of said dogs to limit the rearward turningmovement of. the same, a coil s ring surrounding said parts and engageat opposite ends with said dogs and operating to turn them in a.rearward direction toward said back stops, at spindle passin throughsaid central tubular bearing, a Ievernarm fixed on the outer end of thespindle, and means for" reversibly and adjustably connecting said leverarm to the clutch sleeve externally of the casing. cooperatingtherewith, reversib e and ad-, justable means of connection between said8.. In a closer mechanism, a caslng, a central rotatable spindle, astationary tubular center bearing surrounding said spindle, a

lower dog mounted to rotate relatively to said s'pindle, a clutcharranged above said dog and to engage said dog when turned in onedirection for the purpose of rotating 3 the latter, a sleeve-likeextension from sai clutch surrounding and supported by said centerbearing, an upper dog rotatably mounted upon said sleeve-like extensionand arranged to be engaged by said clutch, a back stop for each of saiddogs, a removable cap for said casing, said cap carrying one of saidback stops, a coiled s rin surrounding said parts and connecte wit saiddo and arranged to move thein toward said back stops, a lever arm fixedon the spindle, and means for adjustably connecting said lever arm withthe sleeve extending from said clutch, said lever connecting means beingshiftable for either right or left hand rotation of the spindle.

WILLIAM K. HENRY.

Witnesses:

IDA M. HUNZIKER, CHAS. A. PEARD,

